Home
Class 12
CHEMISTRY
The d-electron configurations of Cr^(2+)...

The d-electron configurations of `Cr^(2+), Mn^(2+), Fe^(2+) and Co^(2+)` are `d^(4), d^(5), d^(6) and d^(7)` respectively. Which one of the following will exhibit minimum paramagnetic behaviour -

A

`[Mn(H_(2)O_(6)]^(2+)`

B

`[Fe(H_(2)O)_(6)]^(2+)`

C

`[Co(H_(2)O)_(6)]^(2+)`

D

`[Cr(H_(2)O)_(6)]^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
C
The given complexes are all outer orbital complex
`Mn^(2+)rarrd^(5)" system"rarr` 5 unpaired electrons
`Fe^(2+) rarr d^(5)" system "rarr 4` unpaired electrons
`Co^(2+) rarr d^(7)" system "rarr 3` unpaired electrons
`Cr^(2+)rarrd^(4)" system "rarr 4` unpaired electrons
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • COORDINATION COMPOUNDS OR COMPLEX COMPOUNDS

    CHHAYA PUBLICATION|Exercise ENTRANCE QUESTIONS (ENGINEERING AND MEDICAL ARCHIVE) (AIIMS)|12 Videos

  • COORDINATION COMPOUNDS OR COMPLEX COMPOUNDS

    CHHAYA PUBLICATION|Exercise SOLVED NCERT EXEMPLAR PROBLEMS|51 Videos

  • COORDINATION COMPOUNDS OR COMPLEX COMPOUNDS

    CHHAYA PUBLICATION|Exercise ENTRANCE QUESTIONS (ENGINEERING AND MEDICAL ARCHIVE) (JEE-MAIN)|13 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    CHHAYA PUBLICATION|Exercise PRACTICE SET 15|15 Videos

  • D - AND F - BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise PRACTICE SET 8 (Answer the following questions)|10 Videos

Similar Questions

Explore conceptually related problems

Which one of the following exhibits paramagnetism? Sc^(3+),Cr^(3+),Cu^(+),Zn^(2+)

Write the electronic configurations of the following ions: (a) H^(-) (b) Na^(+) , (c) O^(2-) (d) F^(-)

Knowledge Check

  • Which one of the following ions exhibits d-d transition and paramagnetism as well ?

    A
    `MnO_(4)^(-)`
    B
    `Cr_(2)O_(7)^(-)`
    C
    `CrO_(4)^(2-)`
    D
    `MnO_(4)^(2-)`

  • Which one of the following ions exhibits d - d transition and paramagnetism as well -

    A
    `MnO_(4)^(2-)`
    B
    `CrO_(4)^(2-)`
    C
    `MnO_(4)^(-)`
    D
    `Cr_(2)O_(7)^(2-)`

  • General electronic configuration of actinoids is (n-2)f^(1-14)(n-1)d^(0-2)ns^(2) . Which of the following actinoids have one electron in 6d orbital -

    A
    U (Atomic no. 92)
    B
    Np (Atomic no. 93)
    C
    Pu (Atomic no. 94)
    D
    Am (Atomic no. 95)

    • Similar Questions

    Explore conceptually related problems

    If a prop b^(2) , b^(3) prop c^(4) , c^(5) prop d^(6) and d^(7) prop e^(4) , then show that abcd prop e^(4)

    Why does praseodymium possess electronic configuration 4f^(3)6s^(2) instead of the expected one, 4f^(2)5d^(1)6s^(2) ?

    Write down the number of 3d electrons in each of the following ions : Ti^(2+), V^(2+), Cr^(3+), Mn^(2+), Fe^(2+), Fe^(3+), Co^(2+), Ni^(2+) and Cu^(2+) . Indicate how would you expect the five 3d orbitals to be occupied for these hydrated ions (octahedral).

    The electronic configuration of Cu (II) is 3d^(9) whereas that of Cu (I) is 3d^(10) . Which of the following is correct -

    In which of the following elements number of d - electrons is zero in 6d - orbital -

    Home
    Profile